Metal-working machine



Filed July 8. 1925 8 Shee'cZs-Sheei 1 lllllll II lllllllllllll l| A. E. DRISSNER METAL WORKING MACHINE Feb. 22 1927.

8 Sheets-Sheet 2 Filed July 8, 1925 Feb. 22, 1927.

E. DRISSNER METAL WORKING MACHINE Filed Jul? 8. 1925 a Sheets-Sheet 5 Feb. 22, 1927. A. E. DRISSNER METAL WORKING MACHINE Feb. 22 1927.

A. E; DRISSNER METAL WORKI NG MACHI NE iled July 8, 1925 ZgJO.

- HUJML 8 Sheets-Sheet '7 i l l eb 9 7 A. E. DRISSNER METAL WORKING MACHINE 8 Sheets-Sheet 8 Filed July 8, 1925 "Patented Feb. 22,; 1927.

IUNIITEDI STATES PATENT OFFICE.

ALFRED DRISSNER, OF CLEVELAND, OHIO, ASSIGNOR TO THE NATIONAL ACME COMPANY, OF CLEVELAND, OHIO, A CORPORATION OF OHIO.

' METAL-WORKING MACHINE.

Application filed July 8, 1525. Serial No. 42,141.

This invention relates to metal working machines, an objectof the invention being to provide an improved multiple spindle machine, such as an automatic screw machine embodying an indexible turret or cylinder having five rotary .work spindles-and. a five-- sided sliding tool carrier having means for carrying a tool holder .at each angular s de thereof, the improved construction being such that a greater number of end tool op- A further object of this invention is to provide a metal working machine such as an automatic multiple spindle screw machine having an. improved main tool slide, improved guiding and stop means therefor, improved stock feeding mechanism, improved indexing and locking mechanism,

improved top and cross tool slide mecha-' nism, and improved stock stop mechanism.

Other objects of this invention will appear in the following description and appended claims, reference being had to the accompanying drawings forming a part of this specification, wherei like reference characters indicate corresponding parts in the several views, and, wherein Fig. 1 is a side elevation illustrating in part a machine embodying my invention; Fig. 2 is a. vertical section taken substantially onlines-2- 2 of Fig. 1 in the direction of the arrowssFig. 3 is a fragmentary perspective view of the 'rear end of the machine illustrating particularly the stock feed. mechanism; Fig, 4 is a and illustrating particularly the top and cross slide mechanism; Fig, 8 is a fragme'm l tary top plan viewof thetop tool slide mechanism; Fig. 9 is a front elevation illustrating the top tool slide'mechanismyFig. 10 is a central longitudinal section taken through the top tool slide; Fig. lli'sa fragmentary spindle.

sectional View taken on line 44-of Fig.

illustrating the locking mechanism side view showing the guide support for the sliding tool carrier; Fig. 12 is a detail plan view showing the detachable guide and bearing plate for the sliding tool carrier and'Fig. 13 is ,a transverse sectional view taken substantially on lines 13-13 of Fig. 11. Before explaining in detail the present improvement and mode of operationthereof, I desire to have it uncle stood that the invention is not limited .to. tiedetails of construction and arrangement of parts which are illustrated in the accompanying drawings, since the invention is capable of other embodiments, and that the phraseology which I employ is for the purpose of descript on and not of limitation.

that I have illustrated a multiple spindle screw machine embodying my invention, this machine comprising in general an indexible cylinder or turret carrying five equally spaced rotary work spindles, a tool carrier or slide slidable axially toward and from the indexible work carrier, wherein this sliding tool carrier comprises five angular slabbed-off sides or faces, each provided with means for attaching thereto a tool or tool holder.

The machine may be organized as shown in the drawings to provide in addition to the five end-working tool-s, each operating independently upon a iece of work, four cross tool slides operating upon the work in four different spindles, and a vertical top tool slide operating upon the work in a fifth The present machine also comprises improved mechanism for feeding the stock through the spindles, which comprises a feed slide guided by the machine and operated directly from the cam shaft and wherein the stock may be successively fed through the spindles in either of two positions. The

I Referring to the drawings, it will be seen i present machine also comprises mechanism for indexing the cylinder, and mechanism in the'form of a cam operated; lock bolt and a latch bolt for locking the cylinder in .indexed position, it being noted that an improved locking action is obtained by having the lock bolt and latch bolt located at opposite ends of the cylinder and at opposite sides thereof. 7

Frame construction. The present machine in the present preferred form thereof comprises a bed supported upon the usual pan (not shown), this bed'comprising upright supporting frames 9 and 10 connected together by an intermediate bed or saddle portion 11. Mounted upon the rear frame 9 of the bed is a hear ing 12 forming a casing or housing for the work spindle cylinder or turret 13. This cylinder is indexed within the bearing 12 and carries five rotary spindles 14 equally spaced apart.

Sliding tool carrier.

Mounted upon the front frame 10 of the bed is an upwardly extendin bearing bracket 15 within which is journa ed a sliding tubular shaft 16, which has a sliding bearing 16 axially within the cylinder 13.

Extending through the hollow shaft 16 is a rotary spindle driving shaft 17, which by means of suitable gears'located within the housin 12 rotates the work spindles 14. Secured rier or tool slide 18. constructed with five slabbed-ofi' sides or faces, angularly located, and having a horizontal face at the top of the tool carrier. Each of the angular faces of the tool carrier is provided with a longitudinal dove-tailed slot 18 by means of which a tool or a plurality of tools may be mounted and attached at each face of the tool carrier.

Projecting from the rear end of. the tool carrier 18 is a depending bearing bracket 19 having a guide foot 20. The central saddle portion 11 of the bed, as shown in Fig. 13 is substantially oval in shape, and the sides thereof are curved from the top to the bottom thereof, thereby effectively shedding chips and protectingthe operating mechanisms housed therebeneath. At the top thereof the saddle portion 11 is recessed at 21 to provide a shoulder 22 at the forward part thereof, and within this recess is mounted a hardened steel bearing plate 23 secured in place against the shoulder 22 by means of screws 24 countersunk in the bearing plate 23; The supporting foot 20 for the bracket 19 of the tool carrier is recessed at 25 to embrace the bearing plate 23, and slides thereon,

The extension 19 is boredto receive a bushing 27 having a flange 27 hearing against a shoulder 26 formed in the reduced end of a shaft 26, this shaft having a shoulder 26 and is threaded at its end to receive lock nuts 26. The shaft 26 can thus be removed by removing lock nuts 26, then draw;

ing the shaft far enough to the right in Fig. 11 to permit removal of bushing 27, whereupon the shaft can be pulled thru toward the work spindles.

The shaft 26 has a bearing in the bracket 15 and carries at its rear end a cam roll 31 which is engaged by a suitable cam carried to the sliding shaft 16 is a tool car- This tool carrier is by a cam drum 32 mounted on the rotary cam shaft 33 of the machine. Secured to the bearing bracket 19 is a threaded rod 28 which extends rearwardly through a hole bored-in the bracket 15, this hole being of larger diameter than the threaded rod 28 to permit the latter to slide freely through such 101s in the bracket 15. A pair of lock nuts 30 are threaded on to the rear end of the rod 28, and these nuts together with the 10d 28 act in cooperation with the bracket 15 as a positive stop for the forward travel of the tool slide,18. 'Thelength of travel of the tool slide is determined by the size of cam on cam drum 32, and by adjusting the nuts 30 on the rod 28 the nuts will strike against the face of extension 15 at the high polnt of the cam. This insures a positive ength of travel and a uniform length of tool operation on the stock.

Stock or work stop.

A horizontal hexagon. shaft 34 is journaled at its forward end in the frame 9 and at its rear end is journaled in a depending bracket 34' secured to the saddle portion 11, (see Flgs. 1, 2, 11 and 13). Upon the rear end of the shaft 34 and housed within the saddle 11 is secured a sleeve 35 having a depending lever 36 provided with a cam roll 37 in position to be engaged by a cam 38 carried by the cam shaft 33. A spring 39 is connected to the lower end of the lever 36 and is also connected to a removable plug or pin 40 secured in a hole 41 countersunk in the side of the saddle portion 11 (see especially Figs. 2 and 5). An oscillating stock stop 42 is adjustably connected by meansof a sleeve 43 (see Fig. 1) to the hexagon shaft 34, and by means of screws 45 the stop 42 may be adjusted in various positions with relation to the work spindles. The present machine is constructed so that the stock may be fed in either the first or fifth position or in other words through either of the lower two spindles when the cylinder is in a position of rest.

As shown in Fig. 2 therefore, the cam lever 36 may be detached from the shaft 34 and swung around at right angles to the position shown in Fig. 2. At the same time the spring 39 may bedetacbed and connected to the plug 40 in the hole 41 at the opposite side of'the saddle 11. In this manner the same cam 38 will operate to swing the stop 42 in front of either of the first or fifth spindles, and by means of the spring 39 the stock stop will be instantly snapped away from the spindle to avoid interference with the tools of the tool carrier 18. The spring 39 therefore enables the stop 42 to be utilized in any position on the shaft 34 without danger of interference with the tools, since the stop will be instantly swung away from the thereof by the cam 38.

Stools feed wwobam'sm.

is not deemed necessary since the same is.

described in Patent N 0. 1,320,609 dated N ovember 4, 1919 and assigned to The National Acme Company, the assignee of the present invention. The shaft 47 extends axially of the turret 13, and the forward end of this shaft is supported in a bracket 47 bolted to the rear face of the turret 13. A pair of guide shafts or rods 48 and 49 are secured at their forward ends to the cylinder casing 12 and the rear ends thereof are supported in the rear end of the frame as shown in Fig. 3. These shafts'or guide rods are spaced apart and mounted thereon for sliding movement is a stock feed slide 50.- This slide at opposite sides is provided with slots or I'GCGS'TGS 51 Within either of which may be bolted a feed dog or shoe '52. As shown in Fig. 3, the shoe 52 is located in the slot 51 at the right hand side of the slide for operating feed tube 63 to feed in the first position. The feed slide 50 is provided with a curved lot 53 within which projects a ring 54 which is bolted to the slide. Mounted on the under side of the-feed slide 50 is a cam roller 55 -which is engaged by a suitable cam 56 on a cam drum 57, the latter being secured to the cam shaft 33.. To the rear end of the feed slide 50 and centrally thereof is secured a rearwardly extending rod or plunger 58 having a coiled compression spring 59 mounted thereon. The rod or plunger 58 is adapted to slide freely through a hole in the lower part of bracket 46, and this hole is tapped to permit a tubular cap 60 to be screwed thereinto. The spring 59 extends into the cap 60 as shown in Fig. 1, and the plunger 58 is adapted to slide therein.

From the. foregoing construction it will be noted that the cam 56 acting upon roller 55 will shift the feed slide 50 rearwardly upon the guide rods 48 and 49. This operation will compress the feed spring 59. When .the pressure of the cam 56 on the feed slide is released the spring 59 will act to feed the slide 50forwardly upon the guide rods, and

thereupon the feed shoe 52 will engage the end of one of the feed tubes 63 and shift the same forwardly to feed the stock into the chuck.

Secured to the shaft 47 in rear of the ring 54 is a disk 61 provided around the periphery thereof with a series of five circular notches '62. Each of these notches or recesses is adapted to house in normal pOSitlOI the rear enlarged end of a feed tube 63. The guide disk 61 is provided with a rearwardly extending hub 61 upon which is 'rotatably -mounted a guard disk 64, which is provided with a pair, of circular slots 66. The disks 64 and 61 are secured together by means of bolts 65 extending through the slots 66.

.The periphery of the disk 64 is machined to provide a series of five circular notches 67, each notch being located normally between a pair of notches 62 in the disk 61, whereby the edge of the disk 64 between each pair of notches will overlap the rear end of a feed tube 63, thereby acting as a stop. The feed tubes can be readily removed by loosening the bolts 65 and rotating the disk 64 to bring notches 67 and 62 into alinement, whereby'the feed tubes may he slid out spring 68 also acts to keep the guard disk 64 in normal position against accidental turnm Tt will be noted that the ring 54 embraces the series of feed tubes 63, and this ring together with the disk 61 act to prevent whipping action of the feed tubes during the rotation thereof. The ring 54 also returns each feed tube after the feeding operation to its normal position.

It will be understood that each feed tube 63 extends through one of the rotary spin dies and is provided at its forward end with a feed collet, this construction being well known and therefore -a further description is not deemed necessary, Each spindle at its forward end is provided with a chuck 14" for gripping the stock. The chucks are opened and closed by means of chucking tubes (not shown) which extend through the spindles. and are operated by means of fingers 73 pivoted to the finger blocks 73. These fingers are spread for the purpose of operating the chuck by means of the usual sliding wedge having a spool 72. The chucks are operated by means of a slide 70 mounted on the guide rods 48 and 49, this slide being provided with a removable shoe 71 adapted to project into the spools 72. The slide70. as in the case of the slide 50 may be utilized to feed in either the first or fifth position by removing the shoe 71 and securing it in position at the opposite side of the machine, as in the case of the shoe 52 hereinbefore described. Mounted on the bottom of the slide 70 is a cam roller 7 4 which is adapted to be and close the chucks. and the rear ends of the spindles are housed whereby at the proper times the chucking slide will be shifted back and forth thereby to operate the wedge spool 72 and open The feed mechanism within a casing comprising a pair of swinging covers 78 and 79 which are mounted upon a horizontal rod 77 secured at 76 to the upper end of the bracket 46, this rod also being mounted at its forward end in a shoe 80 secured to the top of the cylinder casing 12.

Indexing and locking mechanism.

The cylinder or turret 13 is indexed by means of an indexin lever 81 secured to the cam shaft 33, this lever having cams which operate on rollers 82 carr ed by a gear 83 which meshes with a ring gear mounted around the periphery of the turret 13. Adetailed description of the indexing mechanism is not deemed necessary since the same 1s fully described in Patent No. 1,552,598 dated September 8, 1925, of whichl am the 101m inventor. I

Adjacent to the rear end pf the cylinder casing 12 and pivoted to aboss or bracket 84 extending from the machine frame 1s a swinging lever 85. The lower end of this lever is provided with a pair of cam rollers 86 and 87 (see Fig. 6) which are operated upon at the proper times by a series of earns 88, 89 and 90 carried by a cam d1sk 91 mounted on the cam shaft 33. The lever 85 at its upper end is connected to a sliding lock bolt 92. This lock bolt is located in an lncllned boss 92 and extends upwardly at an angle to the horizontal and is adapted to cooperate successively with a series of five lock bolt seats 93 formed in the periphery of the turret 13. At the opposite side of the cylinder casing 12 and at the forward end thereof, is an inclined projecting boss within which is located a slidin latch bolt 95 which is adapted to be shifte successively into a series of seats 94by means of a spring 94. This latch bolt also extends upwardly at an angle to the horizontal. Thus, from the fore going it will be seen that the lock bolt 92 operates at the rear end of the cylinder 13 (see Fig. 3) and the latch bolt 95 operates at the front end of the cylinder (see Fig. 5), these bolts also operating at opposite sides of the cylinder. The lock bolt 92 is cammed successively into locking position as de scribed in my Patent No. 1.5111504 dated October 1, 192 1, and the angular relation of the lock bolt and latch bolt as well as the fact that they operate at opposite ends and opposite sides of the cylinder cause the cylinder to be locked more rigidly Without vibration during the operation of the tools.

' Furthermore the lock and latch bolts have a tendency to pull the cylinder down toward the central bed construction and firmly fixing the relative position of the spindles and tools, thereby assuring greater accuracy in the1 operation of the side and end working too s.

Gross and top tool slides.

Extending from the bed at one side of the machine is a bracket or support carrying a slideway 101 for a cross tool slide 102 and in like manner at the opposite side of the machine is a bracket or support 103 which carries a slideway 104 for the opposite cross tool slide 105. Journaled in the bracket 100 is a hexagon shaft 106 to which is secured a lever 107 (see Figs. 1 and 2) which is adapted to operate the tool slide 102. To the rear end of the hexagon shaft 106 is bolted a sleeve 108 having a depending lever 109 provided with a cam roller adapted to be engaged by a cam 110 carried by a cam disk 111 secured to the cam shaft.

Journaled in the bracket 103 at the opposite side of the machine is a hexagon shaft 112 to which is secured a lever 113 for shifting the cross slide 105. To the rear end of this shaft is secured a downwardly extending lever 114 which has a cam roller engaged by a cam 115 on the disk 111. From this construction it will be seen that the cross slides 102 and are shifted directly from the cam shaft of the machine.

As illustrated in Fig. 7, the machine may be provided with a pair 'of cross tool slides at each side of the machine. Slides 102 and 105 are each provided with transverse T slots 116 within which are adjustably secured a pair of tool holder supports 117. Mounted on "the top of each of these supports is a plate 118 having a transverse T slot within which is adjustably secured a side tool holder 120. y

Secured to the sleeve 108 and forming an extension of the lever 109 through the medium of which the cross slide 102 is oper ated, is a swinging lever 121, to the u per end of which is pivoted a swinging ever 122. The latter is pivoted to a boss 123 bolted to the side of the cylinder casing. 12 and the upper end of the lever 122 is pivoted at 124 to a horizontal link 125. This link is pivoted at 127 to a horizontally reciprocatmg cam slide 126. This cam slide is provided with longitudinally extending flanges 128 and secured to the front face of the slide are a pair of spaced cams 129 and 130. A top tool slide 131 is carried by an upright bracket 150 bolted at 151 to the top of the cylinder casing. To the front end of the tool slide bracket or support 150 are bolted a pair of spaced vertical plates 132 which form a vertical slideway for the tool slide 131. The tool slide is recessed at 133 to receive the plates 132. The rear face of by shifting cam side 126 in o the tool slide 131 is recessed vertically to receive a cam roller support 134, and secured to this support is a cam roller 135 which projects into the path of the cams 129 and 130. The cam roller support 135 is adjustably secured to the tool slide 131 b means of screws 136 extending through slbts 137 (see Fig. 10). By loosening the screws136 the support -134 maybe adjusted vertically thereby adjusting the posi-.

tion of the roller 135 and lengthening or shortening the throw of the tool slide. The

tool slide 131 is provided with a longitudi nal dove-tailed way within which is located an adjustable slide 138. The slide 138 is provided with a transverse dove-tailed slot or way within which is located an adjustable slide 139, and carried by the latter 1s a .rest shown as a roller rest 140 and acutting It will also be noted from the foregoing that the adjustment of roller 135 permits the vertical. throw of the tool slide to be varied. The adjustment of slide 138 longitudinally permits the tools to be positioned lengthwise of the work, and the adjustment of "slide 139' laterally or transversely permits a similar positioning of the tools 140 and 141.

Tool slide guiding means.

As illustrated in Fig. 7, a shaft 142may be secured to the rear face of the tool slide 18, this shaft having a sliding bearing in a hole extending through bracket 15. Thus the shaft 142 will assist in guiding the tool slide in orderto obtain exact alinement between the tools and the work. From the construction shown in 'Fig. 7 it will be seen that the tool slidev 18 is guided axially of theturret 13 by means of the shaft 16,

. the machine, so that in this way exact 'alinement of the ,tools with the work is main-- I aster of the work.

tained, at all times irrespective ofthe char- It will'be noted that the tool slide 18 is provided with a top horizontal face having a slot 18 by means of Which a tool holder 143 may be secured in horizontal position.

In' addition the tool slide (see Figs. 2 and 7) is provided with four. angular faces, the upper pair having slots 18 and the lower pair .having slots 18 for the reception of tool holders, each pair being located in the same indexing the spindles ina vertically shiftable top .tool slide. By

means of the construction of the main tool slide, and by indexing the spindles into the position shown in Fig. 7, a pair of side working tools may be mounted one above the other at each side of the turret, whereby four side working tools will operate upon four spindles and at the same time the tools carried by the top slide will operate upon the fifth spindle.

' As shown in Fig. 7, a rod 146 issecured to the top tool holder 143 and extends rearwardly through a hole in the bracket 15. This rod slides freely through this hole in the. bracket and isv threaded at its rear end to receive adjusting nuts 147. The rod 146 and the nuts 147 act in conjunction with the stop rod 28 to positively stop the forward travel of thetool slide, and it will be noted that these stop rods 146 and 28 are located above and below the tool slide.

' It is to be understood that by describing in detail herein any particular form, structure or arrangement, it is not intended to 'limit the invention beyond the terms of the several claims or the requirements of the prior art.

Having thus explained the nature of my said invention and *described a way of constructing and using the same, although without attempting to set forth all of the forms in which it may be made, or all of the modes of its use, I claim:

1. In a multiple spindle screw machine, the combination of an indexible turret,

means for indexing it, a series of five rotatable work spindles carried by the turret, means for rotating said spindles, a sliding tool carrier shifta-ble toward and from the turret and having five angular faces, an axially located shaft for supporting said carrier, means for shifting said carrier, means located below said carrier and including a rearwardly extending shaft member for guiding the carrier, and a tool holder carricd on each angular face of said tool carnor.

the combination of an indexible turret,

2. In a multiple spindle screw machine,

- tool carrier means for indexing it, a series of five rotatable work spindles carried by the turret, means for rotating said spindles, a sliding tool carrier shiftable toward and from the turret and having five angular faces, an-

axially located shaft for supporting said carrier, means for shifting said carrier, means located below said carrier and including a rearwardly extending shaft member for guiding the carrier, a rearwardly extending shaft member adjacent to the top of said carrier for guiding it, and a tool holder carried on each angular face of said tool carrier.

8. In a multiple spindle screw machine, the combination of an indexible turret, means for indexing it, a series of live rotatable work spindles carried by the turret, means for rotating said spindle, a sliding tool carrier shiftable toward and from the turret and having five angular faces, each adapted to carry a tool holder, an axially located shaft for supporting said carrier, means located below said carrier and including a rearwardly extending shaft shiftable with the carrier for guiding the carrier, means cooperating with the rear end of said shaft for shifting said carrier, and a rearwardly extending shaft adjacent to the top of said carrier and shiftable with the car rier for also guiding it.

4. In a multiple spindle screw machine, the combination of an indexible turret, means for indexing it, a series of five rotatable work spindles carried by the turret,

one located at the top of the turret when in a osition of rest, means for rotating said spindles, a sliding tool carrier shiftable toward and from the turret and having five angular faces, each adapted to carry a tool holder, an axially located shaft for supporting said carrier, said tool carrier being so located that the top tool holder is in a horizontal plane and in position to cooperate with a work spindle located at the. top of said turret and between a pair of horizontally alined work spindles, a vertically shiftable top tool carrying slide supported above said turret to cooperate with the top work spindle, means located below said carrier and including a rearwardly extending shaft shiftable with the carrier for guiding the carrier, means cooperating with the rear end of said shaft for shifting said carrier, and a rearwardly extending shaft adjacent to the top of said carrier and shiftable with the carrier for also guiding it.

5. In a. multiple spindle screw machine, the combination of a rotatable indexible turret, means for indexing the turret, a sliding rovided with five angularsides, one thei'eof ocated in a horizontal plane and each of said sides having a tool holder slot located between the corners thereof, an axially located shaft for supporting said carrier, means for shifting the tool carrier, means located below said carrier and including a rearwardly extending shaft member for guiding the carrier, and a series of five tool holders carried by said angular sides.

6. In a metal working machine, the combination of work holding means, a five-sided sliding tool carrier, and means for shifting said tool carrier and work holding means one relatively to the other, said tool carrier having two pairs of angularly positioned tools lOt'iltOtl in the same horizontal plane and carriedby a pair of said sides, the upper pair extending a greater distance outwardly from the axis of the carrier than the lower pair, a tool mounted on said carrier in a horizontal plane, an axially located shaftfor supporting said carrier, and means located below said carrier andincluding a rearwardly extending shaft member for guiding the carrier.

7. In a metal working machine, the combination of an indexible turret, a plurality of spindles carried thereby, a tool slide, means supported at one end by the turret axially thereof and at the other end by the machine for guiding the slide, and a pair of adjustable stop means at opposite sides of said means for limiting the travel of the tool slide relatively to the spindles.

8. In a metal working machine, the combination of" an indexible turret, a plurality of spindles carried thereby, a tool slide, means supported at one end by the turret axially thereof and at the other end by the machine for guiding the slide, a pair of adjustable stop means at opposite sides of said means for limiting the travel of the tool slide relatively to the spindles, and tool holders carried by said tool slide, said stop means comprising sliding rods one secured to the rear end of the turret and the other secured to a tool holder.

9. In a metal working machine, the combination of an indexible turret, a tool slide, means for shifting said slide, a top tool slide, a cam shaft, a swinging lever operated from said cam shaft, a second swinging lever pivoted to said first lever, a cam slide oper ated by said second lever, and cam means controlled by said cam slide for shifting the top tool slide at right angles to said cam slide.

10. In a metal working machine, the comination of an indexible turret, a tool slide, means for shifting said slide, a top tool slide, a cam shaft, a cross tool slide, a rock shaft, means connected to said rock shaft for operating said cross slide, a swinging lever carried by said shaft, cammeans carried by said cam shaft for swinging said lever, and a cam slide operated by said lever for shifting said top slide.

11. In a metal working machine, the combination of an indexible turret, a tool slide,

means for shifting said slide, a top tool slide, a cam shaft, a cross tool slide, a rock shaft, means connected to said rock shaft for operating said cross slide, a swinging lever carried by said shaft, cam means car ried by said cam shaft for swinging said lever, a second lever pivoted to said first lever, and a cam slide 0 erated by said second lever for shifting said top slide at right angles to the cam slide.

12. In a metal working machine, the combination of a spindle carrier, a tool slide shiftable toward and from said carrier, a top tool slide, a cam slide, a roller carried by said top tool slide, cams carried by said cam slide, and means for adjusting said roller relatively to said cams for varying the throw of the top tool slide.

13. In ametal working machine, the com bination of a spindle carrier, a top tool slide, a slide carried by said tool slide, means for adjusting said slide relatively to the tool slide, a second slide carried by said first slide, means for adjusting it transversely to said first slide, and a tool carried by said second slide.

14. The combination of a spindle carrier, a plurality of rotary spindles carried thereby, a feed tube in each spindle and having a head, a disk supported in rear of the spindles and having recesses in its periphery for the reception of-the heads and effective to permit the shifting of said feed tubes, a shiftable member located in the rear of said recessed disk and having parts overlapping said heads and shiftable to permit the withdrawal of the feed tubes, and means for reci rocatitng said feed tubes.

15. The com ination of a spindle carrier, a plurality of rotary spindles carried thereby, a feed tube in each spindle and having a head, a disk supported in rear of the spindles and having recesses in its periphery for the reception of the heads and effective to permit the shifting'of said feed tubes, a rotatable recessed disk located in the rear of said recessed disk and having parts overlapping said heads and shiftable to permit the withdrawal of the feed tubes, and means for reciprocating said feed tubes.

16. The combination of a spindle carrier, a plurality of rotary spindles carried thereby, a feed tube in each spindle, a disk supported in the rear of the spindles and having recesses in the periphery thereof for housing the rear ends of the feed tubes, a shiftable disk having parts overlapping the ends of the feed tubes and having recesses alternating therewith and shiftable to permit the withdrawal of the feed tubes, and means for shifting the feed tubes.

17. The combination of a spindle carrier, a plurality of rotary spindles carried thereby, a feed tube in each spindle. a disk sup ported in the rear of the spindles and having recesses in the periphery thereof for .housingrth e rear ends of the feed tubes, a

ciprocation thereof, and shiftable means carried at one face of said guide disk for limiting the rearward movement of the feed tubes and shiftable to permit the withdrawal thereof.

. 19. In a metal working machine having a bed, the combination of an indexible turret,

means for indexing it, a sliding tool carrier, axially located means for supporting thetool carrier, means for sliding'the carrier toward and from the turret, a plurality of rotary spindles carried by the turret, a feed tube carried in each spindle, a feed slide carried by the bed, and cam means for shifting said slide, said slide having means at opposite sides of. the bed adapted to permit said slide to cooperate with eitherof two feed tubes gr feeding the stock thru either of-two spines. '20. The combination of a plurality of rotary spindles, feed tubes in said spindles, ahorizontally shiftable feed slide, means carried by the machine for guiding said slide, means connected to the slide for shifting a feed tube in opposite directions and including aring embracing all of said feed tubes.

21. In a metal working machine having a bed, the combination of a plurality of rotary spindles,feed tubes in said spindles, a horizontally shiftablc feed slide, a pair of rods directly carried by the bed for guiding said slide, and mechanism connected to said slide for shifting a feed tube in opposite directions and comprising a spring for shifting the slide in one direction, and cam means for shifting the slide in the opposite direction.

22. In a metal working machine having a bed, the combination of a plurality of rotary spindles, feed tubes in said spindles, a horizontally shiftable feed slide, a pair of parallel guide rods directly carried by the bed for shiftably supporting said feed slide,

Ill)

24. The combination of a plurality of rotary spindles, reciprocating tubes extending through said spindles and rearwardly thereof, a ring embracing said tubes and engaging abutments carried by the tubes, and a horizontally shift-able slide for shifting said ring to shift a tube.

25. The combination of an indcxible turret, a plurality of rotary spindles carried thereby, a shaft extending rearwardly from said turret and axially thereof, reciprocating tubes in said spindles and extending rearwardly thereof, and means carried by said shaft and cooperating with said tubes for preventing the vibration thereof during the rotation of the tubes.

26. The combination of a spindle carrier, a plurality of rotary spindles carried thereby, a shaft extending rearwardly from said turret and axially thereof, reciprocating tubes in said spindles and extending rearwardly thereof, and rotatable means mounted on said shaft and cooperating with said tubes for limiting the rearward movement of the tubes, said means having a restricted rotatable movement relatively to said shaft to permit rearward movement of said tubes.

27. In a metal working machine, the combination of an indexible turret, a plurality of rotary spindles carried thereby, means for indexing the turret, and means for locking the turret and comprising a downwardly inclined sliding lock bolt and a downwardly inclined sliding latch bolt, each cooperating with the turret below the transverse center line thereof.

28. In a metal working machine, the combination of an indexib'le turret, a plurality of rotary spindles carried thereby, means for indexing the turret, and means for looking the turret and comprising a lock bolt and a latch bolt extending radially of the turret and cooperating with the turret below the transverse center line thereof, said bolts operating at opposite ends and opposite sides of the turret.

29. In a metal working machine, the com bination of an indexible turret, means for indexing it, a series of five rotary spindles carried by said turret, a main tool slide having five angular sides each provided with means for attaching a tool thereto, a'lock and a latch bolt for locking the turret and cooperating with the turret nearer the bottom thereof than the top when the turret is in a position of rest.

30. In a metal working machine, the combination of an indexible turret, a plurality of rotatable. spindles carried thereby, means for initially feeding stock in either of the two lower spindles when the turret is at rest, a tool carrying slide, means for shifting said tool slide, a rock shaft, an oscillating stock stop carried thereby. a cam lever shiftably secured .tothe rock shaft thereby to permit it to be shifted from one side to the other of the machine, a cam shaft, and cam means carried by said cam shaft for operating said cam lever in either of its shifted positions without changing the cam means on the cam shaft whereby the stock stop may cooperate with either of said two lower spindles.

31. In a metal working machine, the combination of an indexible turret, a plurality of rotatable spindles carried thereby, means for initially feeding stock in either of the two lower spindles when the turret is at rest, a tool carrying slide, means for shifting said tool slide, a rock shaft an oscillating stock stop carried thereby, a cam lever shiftably secured to-the rock shaft thereby to permit it to be shifted from one side to the other of the machine, a cam shaft, cam means carried by said cam shaft for operating said cam lever in either of its shifted positions without changing the cam means on the cam shaft whereby the stock stop may cooperate with either of said two lower spindles, and a spring connected to said stock stop and to the machine for resisting the oscillation thereof.

32. In a metal working machine, the combination of a shaft, a sliding tool carrier axially carried by said shaft, and a rearwardly extending shaft located above said shaft and connected with said sliding tool carrier for guiding the same.

33. In a metal working machine, the combination of a shaft, a sliding tool carrier axially carried by said shaft, and a pair of rearwardly extending shafts located one at the underside and the other at the top of said sliding tool carrier and extending in parallelism with said axially located shaft for guiding the sliding tool carrier.

34. In a metal working machine, the com bination of a shaft, a sliding tool carrier axially carried 'by said shaft, and a pair of rearwardly extending shafts located one at the underside and the other at the top of said sliding tool carrier and extending in parallelism with said axially located shaft for guiding the sliding tool carrier, and means located below the lower shaft for also guiding the tool carrier onthe bed of the machine.

35. In ametal working machine, the combination of a sliding tool carrier, and a series of three shafts located one above another and extending rearwardly of said tool carrier for guiding the same.

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lllll 36. In a metal working machine, the comof an indexible turret, means for indexing 1t, a shding tool carrier, means for axially table spindles carried by said turret, a

sliding tool carrier having five angularly located tool supporting faces, means for axially supporting said carrier, means for guiding the carrier, an oval shaped saddle or bed portion secured to said upright frames and located beneath the sliding tool carrier for shedding the chips from the tools carried by the sliding tool carrier, a cam shaft extending under said "oval saddle, and cammeans carried by said cam shaft and located away from said saddle for indexing the turret and shiftingthe sliding tool carrier.

39. In a multiple spindle screw machine having a bed, the combination of an indexible turret, means for indexing it, a series of five rotatable work spindles carried by the turret, the lower two thereof being in a horizontal plane when the turret is at rest whereby either one may be utilized for the initial feeding of the stock, means shiftable from one side to the other of the bed of the machine for initially feeding the stock in either of said spindles, a tool slide shiftable toward and from the turretand having five angular faces for adjustably supporting tools, means for shifting said tool slide, said tool slide being so located that its topv tool holding face is in a horizontal plane and in a position to'have the tool carried thereby cooperate with a work spindle located at the top of said turret and between a pair of parallelly located spindles, and means located axially of the tool slide for supporting it.

40. In a multiple spindle screw machine having a bed, the combination of an indexible turret, means for indexing it, a series of five rotatable work spindles carried by the turret, the lower two thereof being in a horizontal plane when the turret is at rest whereby either one may be utilized for 'the initial feeding of the stock, means shiftable from one side to the other of the bed of the machine for initially feeding the stock in either of said spindles, a tool slide shiftable toward and from the turret and having five angular faces for adjustably supporting tools, means for shifting said tool slide, said tool slide being so located that its top" tool holding face is in a horizontal plane and in a position to have the tool carried thereby cooperate with a work spindle located at the top of said turret, and between a pair of parallelly located spindles, means located axially of-the tool slide for supporting it, a pair of superimposedtool slides located at each side of the machine and cooperating with a pair of work spindles, and means for operating said slides.

41. In a multiple spindle screw machine having a bed, the combination of an indexible turret, means for indexing it, a seriesof five rotatable work spindles carried by the turret, the lower two thereof being in a hori zontal plane when the turret is at rest whereby either one may be utilized for the initial feeding of the stock, means shiftable from one-side to the other of the bed of the machine for initially feeding the stock in either of said spindles, a tool slide shiftable toward and from the turret and having five angular faces for adjustably supporting tools, means for shifting said tool slide, said tool slide being so located that itstop tool holding face is in a horizontal plane and in a position to have the tool carried thereby cooperate with a work spindle located at the top of said turret and between a pair of parallelly located spindles, means located axial.- ly of the tool slide for supporting it, a pair of superimposed tool slides located at each side of the machine and cooperating with a pair of work spindles, means for operating said slides, a vertically shiftable top tool slide in position to o erate upon the top tool spindle, andmeans or operating said slide.

Signed at Cleveland, Ohio, this 29th 'day of June, 1925.

ALFRED E. DRISSNER. 

